7B.3 The Large Hadron Collider

Question 1

how can we find new particles in the LHC

Answer 1

so when shooting fast moving particles at each other then there is a chance for new particles to be discovered. in particle collisions the energy-mass and momentum of particles are conserved so we can use them to find what new particle is

Question 2

what are the four critical experiments in LHC, and each large experiment that changes the world by them

Answer 2

1. CMS - higgs boson - mini black holes, anti mater, super symmetric particles and gravitinos

2.LHCb - it looks for the decay of the bottom quark and the charm quark by looking for mesons containing these. this is to find out why most of our universe is made of matter and litttle anti matter

3. ATLAS - higgs boson - extra diminsion of space - mirco black hole - abti matter in the universe
4. ALICE - observed proton proton collisions - study of collisions of heavy ions- hopped for quark-qloun plasma

Question 3

in the LHC and CMS the charges and of a particles can be found by

Answer 3

monitoring the tracks

Question 4

what must a detector be capable of doing (9 points)

Answer 4

1. measures the direction, momenta, and signs of charged particles
2. measures the energy carried by and electron and a proton in each direction of a collision
3. measures the energy carried by hadrons (protons , neutrons, pions)in each direction
4. identify which charge particles in a collision, if any, are a electrons
   5.identify which charge particles in a collision, if any, are a muons

6.idenitify of the particles originate a few millimeters away from the collision point rather than the collision point it self

7.infer (through conservation of momentum) the presence of neutral particles such as neutrinos

8. fast enough to process information
9. cable of long and reliable operation in radiation environment

Question 5

how is data analysied in the LHC

Answer 5

a system of computer analysis called the grid was created. this allowed thousands of computers to view experimental data also the grid has computers that filter out data that we already know